- L 



666 GENTIANACEAE 



5. L. coeruleum (Mulford) Rydb. Stems erect, 1.5-4 dm. high, glabrous; 

 basal leaves hnear-oblanceolate, glabrous, 1-1.5 dm. long; stem-leaves narrowly 

 Imear, opposite, 4r-8 cm. long; floral ones bract-like; sepals lanceolate, white- 

 margined, about 6 mm. long; corolla blue; lobes ovate, acute, 6-8 mm. long; 

 gland Imear, green, extending from the base to near the middle of the corolla- 

 lobes, frmged on the margin. F. coerulea Mulford. Mountains: Ida.— Ore. 

 Suhmont. — Mont. 



11. TESSARANTHIUM Kellogg. Deer's Tongue. 



Stout perennials with taproots. Leaves in whorls of 4, entire, strongly 

 parallel- vemed, rather firm. Flowers perfect, in an elongate many-flowered 

 thyrsus. Sepals nearly distinct, narrowly hnear, at least equalling the corolla. 

 Corolla rotate, deeply 4-cleft; each division with a pair of oblong glands, and a 

 separate crown below them, dull white or greenish white, dark spotted. Sta- 

 mens mserted on the base of the corolla; filaments subulate. Capsule compressed 

 contrary to the deeply boat-shaped valves. Seed oblong, flat, margined. 



Corolla-lobes 18-22 mm. long, usually exceeded by the long sepals. 



I'lant glabrous; mflorescence simple with verticillate pedicels; basal leaves over 1 dm. 



vnae. . _ ^ , ^ 1. r. macrophyllum. 



i^iant pubenilent; inflorescence compound; some branches simple, others again 



branched; basal leaves about 5 cm. wide. 2. T. scahrum. 



f^oroua-lobes about 15 mm. long or less; inflorescence compound. 



feepals narrowly linear, usually much exceeding the petals. 3. T. stenoscpalum. 



aepals hnear-lanceolate or subulate, scarcely equalling the petals. 



stem-leaves oblanceolate. 4 x speciosum 



Stem-leaves linear-lanceolate. 5, r. angusti folium. 



1. T. macrophyllum (Greene) Rydb. Stem 1-2 m. high, very leafy; 

 basal leaves oblanceolate, 3-5 dm. long, 6^13 cm. wide, rather thin, glabrous, 

 9-lo-ribbed; stem-leaves lanceolate, verticillate; pedicels of various length, 

 i~k ^^* ^^^' usually simple; sepals linear-subulate, 2-3.5 cm. long; corolla- 

 lobes obovate, 18-22 mm. long; fringes of the crown long, almost equalling the 

 narrowly oblong glands. Frasera macrophylla Greene. Rich hillsides: Wyo.— 

 N.M. Suhmont. —MonL Jl-Au. 



2. T. scabrum (M. E. Jones) Rydb. Stem 1 m. or less high, leafy; basal 

 leaves 1-3 dm. long, 3.5-6 cm. wide, oblanceolate, acute, with 7-9 strong ribs, 

 seabrous-puberulent; stem-leaves hnear-lanceolate; pedumcles axillary, some 

 Simple, one-flowered, others branched and 2-5-flowered; sepals linear-subulate, 

 12-30 mm. long; corolla-lobes 18-20 mm. long, oblong-obovate, obtuse; fringes of 

 the cro\ra equalling the oblanceolate glands. F. speciosa scabra M. E. Jones. 

 Hills and mesas: Ariz.— Utah— Colo.— N.M. Sub7no7it.—MonL Je-Jl. 



stenosepalum Rydb. Stem 1 m. high or less; basal leaves oblance- 



5-3 



numerous 



acute; frmges of the crown equalling the oblong glands. F. speciosa stenosepala 

 Rydb. Foot-hills and mountain-sides : Wyo.— N.M. Submont.—Mont. Je-Au. 



4, T. speciosxmi (Dougl.) Rydb. Stem 3-15 dm. high; basal leaves ob- 

 lanceolate, acute, 1-3 dm. long, 3-5 cm. wide, more or less scabrous-puberulent; 



10-15 



the crown usually shorter than the obloAg glands. F. speciosa Dougl. Hills 

 and mountams: Ore.— Cahf.— Colo.— S.D.— Mont. Plain— Mont. Je-Au. 



5. T. angustifolium Rydb. Stem 3-6 dm. high, puberulent; basal leaves 

 mostly reduced and scale-like or a few linear or hnear-lanceolute, 5-8 cm. long, 

 Qin ^"\' ^^ ' P«^^^<^^es usually simple and l-flo\vered; sepals hnear-subulate, 

 8-1 U mm. long; corolla-lobes about 12 mm. long, oval, acute; fringes of the crown 

 scarcely equaUmg the oblong glands. F. speciosa angusHfolia Rydb. Hills: 

 Mont.— Colo. Submont.—Mont. ■ •* ■> 



12. TETRAGONAnTHUS J. F. Gmel. Spurred Gentian. 



Annual or perennial caulescent herbs. Leaves opposite, entire. Flowers 

 perfect, m termmal or axillary cymes or panicles. Calyx deeply 4-cleft. Cor- 



